Buildresult: powerpc-next/ppc6xx_defconfig/powerpc-gcc8 built on Mar 1 2019, 04:14
kisskb
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Status:
OK
Date/Time:
Mar 1 2019, 04:14
Duration:
0:03:50.535641
Builder:
ka1
Revision:
powerpc/64s: Implement KUAP for Radix MMU (
d02d2129641d6cd22492ddc85e11d112eb0d5a6f)
Target:
powerpc-next/ppc6xx_defconfig/powerpc-gcc8
Branch:
powerpc-next
Compiler:
powerpc-gcc8
(powerpc64-linux-gcc (GCC) 8.1.0 / GNU ld (GNU Binutils) 2.30)
Config:
ppc6xx_defconfig
(
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Log:
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Possible warnings (1)
include/sound/control.h:223:9: warning: 'speaker_vol' may be used uninitialized in this function [-Wmaybe-uninitialized]
Full Log
# git rev-parse -q --verify d02d2129641d6cd22492ddc85e11d112eb0d5a6f^{commit} d02d2129641d6cd22492ddc85e11d112eb0d5a6f already have revision, skipping fetch # git checkout -q -f -B kisskb d02d2129641d6cd22492ddc85e11d112eb0d5a6f # git clean -qxdf # < git log -1 # commit d02d2129641d6cd22492ddc85e11d112eb0d5a6f # Author: Russell Currey <ruscur@russell.cc> # Date: Fri Mar 1 01:49:17 2019 +1100 # # powerpc/64s: Implement KUAP for Radix MMU # # Kernel Userspace Access Prevention utilises a feature of the Radix MMU # which disallows read and write access to userspace addresses. By # utilising this, the kernel is prevented from accessing user data from # outside of trusted paths that perform proper safety checks, such as # copy_{to/from}_user() and friends. # # Userspace access is disabled from early boot and is only enabled when # performing an operation like copy_{to/from}_user(). The register that # controls this (AMR) does not prevent userspace from accessing itself, # so there is no need to save and restore when entering and exiting # userspace. # # This feature has a slight performance impact which I roughly measured # to be 3% slower in the worst case (performing 1GB of 1 byte # read()/write() syscalls), and is gated behind the CONFIG_PPC_KUAP # option for performance-critical builds. # # This feature can be tested by using the lkdtm driver (CONFIG_LKDTM=y) # and performing the following: # # # (echo ACCESS_USERSPACE) > [debugfs]/provoke-crash/DIRECT # # If enabled, this should send SIGSEGV to the thread. # # mpe: Drop the unused paca flags. Zero the UAMOR to be safe. Save the # AMR when we enter the kernel from the kernel and then lock it again. # Restore on the way back to the kernel. This means we handle nesting of # interrupts properly, ie. we are protected inside the page fault # handler caused by a user access. Add paranoid checking of AMR in # switch and syscall return. Add an isync() to prevent_user_access() # # Signed-off-by: Russell Currey <ruscur@russell.cc> # Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> # < /opt/cross/kisskb/korg/gcc-8.1.0-nolibc/powerpc64-linux/bin/powerpc64-linux-gcc --version # < /opt/cross/kisskb/korg/gcc-8.1.0-nolibc/powerpc64-linux/bin/powerpc64-linux-ld --version # < git log --format=%s --max-count=1 d02d2129641d6cd22492ddc85e11d112eb0d5a6f # < make -s -j 48 ARCH=powerpc O=/kisskb/build/powerpc-next_ppc6xx_defconfig_powerpc-gcc8 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.1.0-nolibc/powerpc64-linux/bin/powerpc64-linux- ppc6xx_defconfig # make -s -j 48 ARCH=powerpc O=/kisskb/build/powerpc-next_ppc6xx_defconfig_powerpc-gcc8 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.1.0-nolibc/powerpc64-linux/bin/powerpc64-linux- In file included from /kisskb/src/sound/ppc/pmac.h:25, from /kisskb/src/sound/ppc/awacs.c:29: /kisskb/src/sound/ppc/awacs.c: In function 'snd_pmac_awacs_init': /kisskb/src/include/sound/control.h:223:9: warning: 'speaker_vol' may be used uninitialized in this function [-Wmaybe-uninitialized] return _snd_ctl_add_slave(master, slave, 0); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /kisskb/src/sound/ppc/awacs.c:886:36: note: 'speaker_vol' was declared here struct snd_kcontrol *master_vol, *speaker_vol; ^~~~~~~~~~~ INFO: Uncompressed kernel (size 0xb774c8) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xc00000) INFO: Uncompressed kernel (size 0xb774c8) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xc00000) INFO: Uncompressed kernel (size 0xb774c8) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xc00000) INFO: Uncompressed kernel (size 0xb774c8) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xc00000) INFO: Uncompressed kernel (size 0xb774c8) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xc00000) INFO: Uncompressed kernel (size 0xb774c8) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xc00000) INFO: Uncompressed kernel (size 0xb774c8) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xc00000) INFO: Uncompressed kernel (size 0xb774c8) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xc00000) INFO: Uncompressed kernel (size 0xb774c8) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xc00000) INFO: Uncompressed kernel (size 0xb774c8) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xc00000) INFO: Uncompressed kernel (size 0xb66db0) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xc00000) INFO: Uncompressed kernel (size 0xb66db0) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xc00000) Image Name: Linux-5.0.0-rc2+ Created: Fri Mar 1 04:18:30 2019 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 5507177 Bytes = 5378.10 KiB = 5.25 MiB Load Address: 00c00000 Entry Point: 00c002a4 Image Name: Linux-5.0.0-rc2+ Created: Fri Mar 1 04:18:30 2019 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 5507066 Bytes = 5377.99 KiB = 5.25 MiB Load Address: 00c00000 Entry Point: 00c00934 Image Name: Linux-5.0.0-rc2+ Created: Fri Mar 1 04:18:30 2019 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 5507403 Bytes = 5378.32 KiB = 5.25 MiB Load Address: 00c00000 Entry Point: 00c002a4 Image Name: Linux-5.0.0-rc2+ Created: Fri Mar 1 04:18:30 2019 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 5470835 Bytes = 5342.61 KiB = 5.22 MiB Load Address: 00000000 Entry Point: 00000000 Image Name: Linux-5.0.0-rc2+ Created: Fri Mar 1 04:18:31 2019 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 5506969 Bytes = 5377.90 KiB = 5.25 MiB Load Address: 00c00000 Entry Point: 00c002a4 Image Name: Linux-5.0.0-rc2+ Created: Fri Mar 1 04:18:31 2019 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 5507019 Bytes = 5377.95 KiB = 5.25 MiB Load Address: 00c00000 Entry Point: 00c00934 Image Name: Linux-5.0.0-rc2+ Created: Fri Mar 1 04:18:31 2019 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 5506092 Bytes = 5377.04 KiB = 5.25 MiB Load Address: 00c00000 Entry Point: 00c002a4 Image Name: Linux-5.0.0-rc2+ Created: Fri Mar 1 04:18:31 2019 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 5507063 Bytes = 5377.99 KiB = 5.25 MiB Load Address: 00c00000 Entry Point: 00c002a4 Image Name: Linux-5.0.0-rc2+ Created: Fri Mar 1 04:18:31 2019 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 5505915 Bytes = 5376.87 KiB = 5.25 MiB Load Address: 00c00000 Entry Point: 00c002a4 Completed OK # rm -rf /kisskb/build/powerpc-next_ppc6xx_defconfig_powerpc-gcc8 # Build took: 0:03:50.535641
© Michael Ellerman 2006-2018.